10856909 has 8 divisors (see below), whose sum is σ = 12439680. Its totient is φ = 9282096.

The previous prime is 10856899. The next prime is 10856929. The reversal of 10856909 is 90965801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10856909 - 2⁴ = 10856893 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10856929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1307 + ... + 4839.

It is an arithmetic number, because the mean of its divisors is an integer number (1554960).

Almost surely, 2^10856909 is an apocalyptic number.

It is an amenable number.

10856909 is a deficient number, since it is larger than the sum of its proper divisors (1582771).

10856909 is an equidigital number, since it uses as much as digits as its factorization.

10856909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3979.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 10856909 is about 3294.9823975251. The cubic root of 10856909 is about 221.4294591313.

The spelling of 10856909 in words is "ten million, eight hundred fifty-six thousand, nine hundred nine".